一
//直接在js中写<script language="javascript"> function EnterTextBox()
{
if(event.keyCode == 13 && document.all["TextBox1"].value != "")
{ event.keyCode = 9; event.returnValue = false; document.all["TextBox1"].click();
}
} </script><body onkeypress="return EnterTextBox()">//此处TextBox1为页面上TextBox的ID
二.
<script language="javascript"> function EnterTextBox(button)
{ if(event.keyCode == 13 && document.all["TextBox1"].value != "")
{ event.keyCode = 9; event.returnValue = false; document.all[button].click(); } } </script>在PageLoad事件里TextBox1.Attribute.add("onkeypress","EnterTextBox('Button1')");